Slip handler



July 26, 1927. 1,637,056

I A. L. sEGl-:ALHoRsT s'LIP HANDLER Filed April '7,y 1924 2 Sheets-Sheet1 1 f 14s' TQQ, A09-usr. gevel/fares;-

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July 26,1927. 1,637,056

A. L. SEGELHORST SLIP HVANDLER Filed April v, 1924 a sheets-sneer 2Patented July 26, 1927.

UNITED, STATES .AUGUST L. SEGELHORST, F CALIFORNIA.

Application led April 7, 1924. Serial No. 704,748.

My present invention being referred to as a slip-handler, it may beunderstood t0 be an object of this invention to provide means wherebyslips, such as are commonly' Iemployed in the supportin of a string ofpipe, may be easily and reliably moved 1nto or out of an engagingposition, without necessitating a separate or manual manipulationthereof.

It is an object of this invention to provide means whereby a set ofslips. may be simultaneously and harmoniously moved to or from anengaging position by simple mechanism, which may include a depressingring and a lever, under the control of a single operative.

It is an object of this invention to provide means for moving a set ofslips at will in either of two opposite directions; and a preferredembodiment of my invention may comprise resilient means tending toelevate -or hold slips constituting a set 1n an upper or disengagingposition, and a. lever connected or integral with a depressing ring andpivoted to a supporting body, for forcing said slips at will into anengaging position.

It is a further object of my invention to provide slip-handling meanswhose principles of `construction and operation shall be such as topermit of their embodiment in or application to a. wide variety ofpipe-handling devices, such as packing spiders, drawing spiders, androtary tables or table busliings; and preferred embodiments of my1nvention are such as to permit of a ready substitution of myslip-handling device for devices or parts of less efficiency that are`in current use. i Other objects of my invention will appear ,from thefollowing description of alternative embodiments thereof, taken inconnection with appended claims and accompanying drawings,'in which Fig.1 is an elevational view, with parts broken away. showing an embodimentof my invention suitable for use in a packing spider. y Y

Fig. 2 is a plan view of the same. o

Fig. 3 is a vertical section corresponding to Fig. 1, and showing the'slips in depressed engaging position, but with the depressing means notshown.

Fig. 4 Jis a view similar to Fig. 3 but showing the slins in an elevatedosition.

Fig. 5 is a perspective view o a similar embodiment of my inventionhereinafter referred to.

Fig. 6 is a perspective view of an embodiment of my invention as samemay be applied to a two-lug drawing spider.

Fig.. 7 is an elevational view, with parts broken away, showing anadaptation of my invention to use in connection with table bushingmounted in a rotary drilling table.

Fig. 8 is a separate view of a split table bushing suitable for optionaluse in such an organization asv is shown in Fig. 7.

Fig. 9'is a top plan view of an alternative ladaptation of my inventionto use in connection with a rotary table, a split table bushing being inthis case identical or integral with the supporting body of mysliphandler.

Referring to the details of that specific embodiment` of my inventionshown in Figs. 1 to 4 inclusive, 11 may be a packing spider body, of ausual construction constituting no part of my present invention; and 12may be a spider suitable for use in connection therewith and modified,as hereinafter described, to resiliently support a set of slips 13 ofsomewhat special design.

Normally to hold the slips 13 when the weight of a pipe string iswithdrawn therefrom in an elevated or withdrawn position relatively tothe spider or supporting body 12, undercutting at 14 the interiorsurface of the spider 12, I'may provide the respective slips withcorresponding transverse channels 15 in suchv manner as to provideco-operating shoulders 16 and 17 respectively upon the spider 12 and theslips 13. The members referred to being op ositely cut 'away to permitinterfitting, and) consequent rapid retraction the contacting of theseshoulders is adapted to limit the upward or withdrawal movement of saidslips; and this .u Ward or Withdrawal movement may be e ected byresilient means such as the compression springs 18, through which extendrods 19, shown as pivoted or otherwise secured at 20 to the respectiveslips as by pins shown as extending through the shoulders 17 thereon.Tapered or ample channels 21 may be provided to permita free movement ofthe rods or links 19, and housings 22, shown as threaded into thespiderfor supporting body 12, may be vided to protect the sprin 18 fromliability to accidental damage. s will be appreciated from an inspectionof Figs. 3 and 4,

the springs 18, or their equivalent, may be ei'ective normally to holdthe slips 13 in an e'levated position, in which position the shoulders23, upwardly terminating the transverse channels 15, may overlle andrest upon corresponding shoulders or the top surface 24 of the spider orsupporting body y12; and in order harmoniously and simultaneously todepress at will a set of slips supported in the manner described, or 1nany equivalent manner, vI may employ means such as a depressing ring 25,this ring being shown as immediately contacting with the upper surfacesof a set of slips and as connected by links or rods 26 with a lever 27,intended to be arranged conveniently for depression by merely steppingthereon, one

-end of this lever being shown as secured relatively to the spider 12, alink 28'being optionally interposed and pivoted at its respective ends,by means of pins 29 and 30, to the lever 27 and the spider 12.

In the alternative form shown in Fig. 5, no part corresponding to thelink 28 bein employed, a from a single piece of heavy sheet metal rebentat 3l and slotted to permit of its pivoting upon a lag bolt 32 threadedinto the body 12. l

In the alternative form shown 1n Fig. 6, a forked lever 33 is shown aspivoted at 34 to the body of a two-lug drawing spider, and as connectedby links or rods 26h with a def pressing ring 25", the remaining partsbeing substantially as indicated in the preceding figures. f

In the alternative orm shown 1n F1gs. 7 and 8, a supporting body 12C,which may be similar in form to the packing spider shown in Figs. 1 to 5inclusive and may be suitable for use as an ordinary spider, is providedon its upper surface with a perforated lug 35, to which is pivoted alever 27 c, this lever being connected with a depressing ring 25c bymeans of rods or links 26', and the 1ny terior organization of thisslip-handler may be substantially such as has been described above. Topermit an advantageous seating of this organization in a rotary table36, I may employ either an integral bushing 37 or a s lit table bushingcomprising sections 37c an 37C', as shown in Fig. 8; or I mayoptional'ly employ a split table bushing comprisin sections 37d and37d', which may be regar ed as permanently connected or integral withcorresponding sections of a supporting body, the foot ever 27d beingsubstantiall identical in structure and relationships with thecorresponding lever 27S, as

vdisc'losed in Fig. 7. In the forms of my invention disclosed in Figs.7,' 8 and 9, nuts 38 and sleeves 39 may be employed in connection withthe rods or links 26; and when the springs b which my slips are normallyheld in with uw!! position are not housed lever 27a is shown as formedentirely within'a supporting body, the upper ends thereof may beprotected by threaded `without the slightest departure from the spiritand scope of my invention, as the same 'is indicated abovefand in thefollowing claims.

I claim as my inventiont 1. A device of the character describedcomprising, a housing, a pair of opposed slips slidable therein, saidslips and housing being provided upon their engaging faces withtransverse recesses producing interlitting parts whereby the slips areadapted to move outwardly to clear the tubing and its collar or collarswhen elevated and to be locked within the housing'in the elevatedposition, and elements carried by the slips to raise them.

2. In a well appliance, a set of pipe slips, and a supporting bodysurrounding said slips, said body being provided with undercut shouldersand each slip being cut away at its rear to permit interttting and thereprovided with resilient means for separately withdrawing and retainingthe same in an elevated position when a load is taken therefrom.

3. In a well appliance, a set of pipe slips, and a supporting bodysurrounding said slips, said slips and said body being respectivelyprovided with inclined and undercut shoulders capable of interltting topermit rapid retraction and to limit the upward a supporting bodysurrounding said slips,"

and moving means comprising a depressing ring engaging said slips andmovable by means of a foot lever pivoted to said body and connected tosaid depressing ring by links.

5. In a well appliance, a set of pipe slips, means for elevating thesame when released, a supporting body surroundin said slips, and meanscomprising a single ever pivoted to said body and connections from saidlever to said slips for simultaneously depressing said slips.

, 6. In a device of the character described, a housing havingi aninterior inclined engaging face, sai housing being-provided upon suchengaging face with a recess, the bottom wall of the recess beingpositioned outwardly of the engaging face, and a slip operating withinthe housmg and having a lateral projection, said projection beingadapted for over-running s'lidable engagement with the inclined face'forproducing a wedging action and also adapte to move off of saidengagingface and to enter said recess, when the slip is movedlongitudinally in one direction.

7. In a device of the character described, a housing having inclinedinterior faces pro-4 vided with recesses producing end ortlons, slipsslidable within the housing an having inclined exterior faces providedwith recesses forming end portions, the end portions of the housingbeing adapted to enter the recesses of the slips and the end portions ofthe slips to enter the recesses of the housing.

:8. A device of the character described, comprising a housing having aninclined wall provided with a recess spaced from its upper end, a sliphaving a co-acting inclined wall and provided with a recess spaced fromthe lower end of the sli ,said inclined walls beingl adapted for slidale engagement and the recesses producing interlocking parts A'which areadapted to enter said recesses.

9. A housing having an inclined Wall, a

slip within the housin having an inclined wall, said inclined wa beingadapted for slidable engagement, said engaging walls embodying spacedengaging elements having recesses between them, said enaging elementsbeing adapted to enter said recesses.

10. In a device of the character described, a housing provided upon itsinner side with spaced lateral projections constituting inclined walls,a slip operating within the housing and having spaced lateralprojections constituting inclined walls, the projections of the housingand slip being adapted for over riding slidable engagement, and oneprojection of the housing being adapted to enter the recess between therejections of the slip and one projection of t e slip being adapted toenter the recess between the projections of the housing. v

In testimonyT whereof, I have hereunto set my hand at Los Angeles,California, this 28th day of March, 1924.

AUGUST L. SEGELHORST.

